Ganesh text rendering cleanup.

Rename GrTextStrike.{cpp.h} to GrFontCache.{cpp,h}
Move contents of GrTextStrike_impl.h to GrFontCache.h
Move glyph uploading to a separate function and remove harmful gotos
Add assert on glyph upload failure (shouldn't happen)

Review URL: https://codereview.chromium.org/780923002
diff --git a/src/gpu/GrDistanceFieldTextContext.cpp b/src/gpu/GrDistanceFieldTextContext.cpp
index f296244..e5374f2 100755
--- a/src/gpu/GrDistanceFieldTextContext.cpp
+++ b/src/gpu/GrDistanceFieldTextContext.cpp
@@ -10,13 +10,12 @@
 #include "GrBitmapTextContext.h"
 #include "GrDrawTarget.h"
 #include "GrDrawTargetCaps.h"
+#include "GrFontCache.h"
 #include "GrFontScaler.h"
 #include "GrGpu.h"
 #include "GrIndexBuffer.h"
 #include "GrStrokeInfo.h"
 #include "GrTexturePriv.h"
-#include "GrTextStrike.h"
-#include "GrTextStrike_impl.h"
 
 #include "SkAutoKern.h"
 #include "SkColorFilter.h"
@@ -435,6 +434,42 @@
     
 }
 
+inline bool GrDistanceFieldTextContext::uploadGlyph(GrGlyph* glyph, GrFontScaler* scaler) {
+    if (!fStrike->glyphTooLargeForAtlas(glyph)) {
+        if (fStrike->addGlyphToAtlas(glyph, scaler)) {
+            return true;
+        }
+        
+        // try to clear out an unused plot before we flush
+        if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) &&
+            fStrike->addGlyphToAtlas(glyph, scaler)) {
+            return true;
+        }
+        
+        if (c_DumpFontCache) {
+#ifdef SK_DEVELOPER
+            fContext->getFontCache()->dump();
+#endif
+        }
+        
+        // before we purge the cache, we must flush any accumulated draws
+        this->flush();
+        fContext->flush();
+        
+        // we should have an unused plot now
+        if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) &&
+            fStrike->addGlyphToAtlas(glyph, scaler)) {
+            return true;
+        }
+        
+        // we should never get here
+        SkASSERT(false);
+    }
+    
+    return false;
+}
+
+
 // Returns true if this method handled the glyph, false if needs to be passed to fallback
 //
 bool GrDistanceFieldTextContext::appendGlyph(GrGlyph::PackedID packed,
@@ -484,35 +519,7 @@
         return true;
     }
 
-    if (NULL == glyph->fPlot) {
-        if (!fStrike->glyphTooLargeForAtlas(glyph)) {
-            if (fStrike->addGlyphToAtlas(glyph, scaler)) {
-                goto HAS_ATLAS;
-            }
-
-            // try to clear out an unused plot before we flush
-            if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) &&
-                fStrike->addGlyphToAtlas(glyph, scaler)) {
-                goto HAS_ATLAS;
-            }
-
-            if (c_DumpFontCache) {
-#ifdef SK_DEVELOPER
-                fContext->getFontCache()->dump();
-#endif
-            }
-
-            // before we purge the cache, we must flush any accumulated draws
-            this->flush();
-            fContext->flush();
-
-            // we should have an unused plot now
-            if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) &&
-                fStrike->addGlyphToAtlas(glyph, scaler)) {
-                goto HAS_ATLAS;
-            }
-        }
-
+    if (NULL == glyph->fPlot && !uploadGlyph(glyph, scaler)) {
         if (NULL == glyph->fPath) {
             SkPath* path = SkNEW(SkPath);
             if (!scaler->getGlyphPath(glyph->glyphID(), path)) {
@@ -540,7 +547,6 @@
         return true;
     }
 
-HAS_ATLAS:
     SkASSERT(glyph->fPlot);
     GrDrawTarget::DrawToken drawToken = fDrawTarget->getCurrentDrawToken();
     glyph->fPlot->setDrawToken(drawToken);