Cleaning up trailing spaces and typos.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1631993002

Review URL: https://codereview.chromium.org/1631993002
diff --git a/src/core/SkMipMap.cpp b/src/core/SkMipMap.cpp
index 39d42a2..e105493 100644
--- a/src/core/SkMipMap.cpp
+++ b/src/core/SkMipMap.cpp
@@ -352,7 +352,7 @@
     return true;
 }
 
-// Helper which extacts a pixmap from the src bitmap
+// Helper which extracts a pixmap from the src bitmap
 //
 SkMipMap* SkMipMap::Build(const SkBitmap& src, SkDiscardableFactoryProc fact) {
     SkAutoPixmapUnlock srcUnlocker;
diff --git a/src/effects/SkBlurMaskFilter.cpp b/src/effects/SkBlurMaskFilter.cpp
index edd2fa4..be0c816 100644
--- a/src/effects/SkBlurMaskFilter.cpp
+++ b/src/effects/SkBlurMaskFilter.cpp
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2006 The Android Open Source Project
  *
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 4d3045a..e0ee801 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2011 Google Inc.
  *
diff --git a/src/gpu/GrGpu.cpp b/src/gpu/GrGpu.cpp
index 2815f61..43a75ae 100644
--- a/src/gpu/GrGpu.cpp
+++ b/src/gpu/GrGpu.cpp
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2010 Google Inc.
  *
@@ -353,7 +352,7 @@
     SkASSERT(buffer);
 
     this->handleDirtyContext();
-    if (this->onTransferPixels(surface, left, top, width, height, config, 
+    if (this->onTransferPixels(surface, left, top, width, height, config,
                                buffer, offset, rowBytes)) {
         fStats.incTransfersToTexture();
         return true;
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index 1566872..bfcaeae 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -197,7 +197,7 @@
     bool getReadPixelsInfo(GrSurface* srcSurface, int readWidth, int readHeight, size_t rowBytes,
                            GrPixelConfig readConfig, DrawPreference*, ReadPixelTempDrawInfo*);
 
-    /** Info struct returned by getWritePixelsInfo about performing an intermediate draw in order 
+    /** Info struct returned by getWritePixelsInfo about performing an intermediate draw in order
         to write pixels to a GrSurface for either performance or correctness reasons. */
     struct WritePixelTempDrawInfo {
         /** If the GrGpu is requesting that the caller upload to an intermediate surface and draw
diff --git a/src/gpu/GrTest.cpp b/src/gpu/GrTest.cpp
index 8174d76..88e154c 100644
--- a/src/gpu/GrTest.cpp
+++ b/src/gpu/GrTest.cpp
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2013 Google Inc.
  *
@@ -386,7 +385,7 @@
 
     GrBackendObject createTestingOnlyBackendTexture(void* pixels, int w, int h,
                                                     GrPixelConfig config) const override {
-        return 0; 
+        return 0;
     }
     bool isTestingOnlyBackendTexture(GrBackendObject ) const override { return false; }
     void deleteTestingOnlyBackendTexture(GrBackendObject, bool abandonTexture) const override {}
diff --git a/src/gpu/GrTexture.cpp b/src/gpu/GrTexture.cpp
index 905455a..249fe98 100644
--- a/src/gpu/GrTexture.cpp
+++ b/src/gpu/GrTexture.cpp
@@ -18,7 +18,7 @@
 void GrTexture::dirtyMipMaps(bool mipMapsDirty) {
     if (mipMapsDirty) {
         if (kValid_MipMapsStatus == fMipMapsStatus) {
-           fMipMapsStatus = kAllocated_MipMapsStatus;
+            fMipMapsStatus = kAllocated_MipMapsStatus;
         }
     } else {
         const bool sizeChanged = kNotAllocated_MipMapsStatus == fMipMapsStatus;
diff --git a/src/gpu/GrTexturePriv.h b/src/gpu/GrTexturePriv.h
index 8add4e1..da0558e 100644
--- a/src/gpu/GrTexturePriv.h
+++ b/src/gpu/GrTexturePriv.h
@@ -62,7 +62,7 @@
     GrTexturePriv* operator&();
 
     GrTexture* fTexture;
-        
+
     friend class GrTexture; // to construct/copy this type.
 };
 
diff --git a/src/gpu/GrTextureProvider.cpp b/src/gpu/GrTextureProvider.cpp
index 1c2f365..105cce2 100644
--- a/src/gpu/GrTextureProvider.cpp
+++ b/src/gpu/GrTextureProvider.cpp
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2015 Google Inc.
  *
diff --git a/src/gpu/effects/GrTextureStripAtlas.cpp b/src/gpu/effects/GrTextureStripAtlas.cpp
index f2133d1..39bc389 100644
--- a/src/gpu/effects/GrTextureStripAtlas.cpp
+++ b/src/gpu/effects/GrTextureStripAtlas.cpp
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2012 Google Inc.
  *
@@ -19,7 +18,7 @@
     #define VALIDATE
 #endif
 
-class GrTextureStripAtlas::Hash : public SkTDynamicHash<GrTextureStripAtlas::AtlasEntry, 
+class GrTextureStripAtlas::Hash : public SkTDynamicHash<GrTextureStripAtlas::AtlasEntry,
                                                         GrTextureStripAtlas::Desc> {};
 
 int32_t GrTextureStripAtlas::gCacheCount = 0;
diff --git a/src/gpu/gl/GrGLGpu.cpp b/src/gpu/gl/GrGLGpu.cpp
index 94307a6..acaf8ca 100644
--- a/src/gpu/gl/GrGLGpu.cpp
+++ b/src/gpu/gl/GrGLGpu.cpp
@@ -525,7 +525,7 @@
         case kBorrow_GrWrapOwnership:
             idDesc.fLifeCycle = GrGpuResource::kBorrowed_LifeCycle;
             break;
-    }    
+    }
     idDesc.fSampleConfig = GrRenderTarget::kUnified_SampleConfig;
 
     GrSurfaceDesc desc;
@@ -2856,7 +2856,7 @@
     }
 
     const GrGLTexture* srcTex = static_cast<const GrGLTexture*>(src->asTexture());
-    
+
     // Check that we could wrap the source in an FBO, that the dst is TEXTURE_2D, that no mirroring
     // is required.
     if (gpu->glCaps().isConfigRenderable(src->config(), src->desc().fSampleCnt > 0) &&
@@ -2905,7 +2905,7 @@
 }
 
 void GrGLGpu::unbindTextureFBOForCopy(GrGLenum fboTarget, GrSurface* surface) {
-    // bindSurfaceFBOForCopy temporarily binds textures that are not render targets to 
+    // bindSurfaceFBOForCopy temporarily binds textures that are not render targets to
     if (!surface->asRenderTarget()) {
         SkASSERT(surface->asTexture());
         GrGLenum textureTarget = static_cast<GrGLTexture*>(surface->asTexture())->target();
@@ -2989,7 +2989,7 @@
         this->copySurfaceAsDraw(dst, src, srcRect, dstPoint);
         return true;
     }
-    
+
     if (can_copy_texsubimage(dst, src, this)) {
         this->copySurfaceAsCopyTexSubImage(dst, src, srcRect, dstPoint);
         return true;
@@ -3040,7 +3040,7 @@
         vshaderTxt.append(";");
         vTexCoord.appendDecl(this->glCaps().glslCaps(), &vshaderTxt);
         vshaderTxt.append(";");
-    
+
         vshaderTxt.append(
             "// Copy Program VS\n"
             "void main() {"
@@ -3079,7 +3079,7 @@
             fsOutName,
             GrGLSLTexture2DFunctionName(kVec2f_GrSLType, kSamplerTypes[i], this->glslGeneration())
         );
-    
+
         GL_CALL_RET(fCopyPrograms[i].fProgram, CreateProgram());
         const char* str;
         GrGLint length;
diff --git a/src/image/SkImage_Gpu.cpp b/src/image/SkImage_Gpu.cpp
index 1d25635..a758efe 100644
--- a/src/image/SkImage_Gpu.cpp
+++ b/src/image/SkImage_Gpu.cpp
@@ -292,7 +292,7 @@
     if (!dst) {
         return nullptr;
     }
-    
+
     const SkIRect srcR = SkIRect::MakeWH(desc.fWidth, desc.fHeight);
     const SkIPoint dstP = SkIPoint::Make(0, 0);
     ctx->copySurface(dst, src, srcR, dstP, GrContext::kFlushWrites_PixelOp);