Refactor read and write buffers.

Eliminates SkFlattenable{Read,Write}Buffer, promoting SkOrdered{Read,Write}Buffer
a step each in the hierarchy.

What used to be this:

SkFlattenableWriteBuffer -> SkOrderedWriteBuffer
SkFlattenableReadBuffer  -> SkOrderedReadBuffer
SkFlattenableReadBuffer  -> SkValidatingReadBuffer

is now

SkWriteBuffer
SkReadBuffer -> SkValidatingReadBuffer

Benefits:
  - code is simpler, names are less wordy
  - the generic SkFlattenableFooBuffer code in SkPaint was incorrect; removed
  - write buffers are completely devirtualized, important for record speed

This refactoring was mostly mechanical.  You aren't going to find anything
interesting in files with less than 10 lines changed.

BUG=skia:
R=reed@google.com, scroggo@google.com, djsollen@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/134163010

git-svn-id: http://skia.googlecode.com/svn/trunk@13245 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/pipe/SkGPipeWrite.cpp b/src/pipe/SkGPipeWrite.cpp
index 2948f25..ce58ca6 100644
--- a/src/pipe/SkGPipeWrite.cpp
+++ b/src/pipe/SkGPipeWrite.cpp
@@ -17,7 +17,7 @@
 #include "SkGPipePriv.h"
 #include "SkImageFilter.h"
 #include "SkMaskFilter.h"
-#include "SkOrderedWriteBuffer.h"
+#include "SkWriteBuffer.h"
 #include "SkPaint.h"
 #include "SkPathEffect.h"
 #include "SkPictureFlat.h"
@@ -75,7 +75,7 @@
         SkASSERT((isCrossProcess && fset != NULL) || (!isCrossProcess && NULL == fset));
         if (isCrossProcess) {
             this->setNamedFactorySet(fset);
-            this->setWriteBufferFlags(SkFlattenableWriteBuffer::kCrossProcess_Flag);
+            this->setWriteBufferFlags(SkWriteBuffer::kCrossProcess_Flag);
         }
     }
 
@@ -151,7 +151,7 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 struct SkFlattenableTraits {
-    static void flatten(SkOrderedWriteBuffer& buffer, const SkFlattenable& flattenable) {
+    static void flatten(SkWriteBuffer& buffer, const SkFlattenable& flattenable) {
         buffer.writeFlattenable(&flattenable);
     }
     // No need to define unflatten if we never call it.
@@ -370,11 +370,11 @@
 
 bool SkGPipeCanvas::shuttleBitmap(const SkBitmap& bm, int32_t slot) {
     SkASSERT(shouldFlattenBitmaps(fFlags));
-    SkOrderedWriteBuffer buffer;
+    SkWriteBuffer buffer;
     buffer.setNamedFactoryRecorder(fFactorySet);
     buffer.writeBitmap(bm);
     this->flattenFactoryNames();
-    uint32_t size = buffer.size();
+    uint32_t size = buffer.bytesWritten();
     if (this->needOpBytes(size)) {
         this->writeOp(kDef_Bitmap_DrawOp, 0, slot);
         void* dst = static_cast<void*>(fWriter.reserve(size));
@@ -1146,7 +1146,7 @@
                 this->writeOp(kSetAnnotation_DrawOp, 0, 0);
             }
         } else {
-            SkOrderedWriteBuffer buffer;
+            SkWriteBuffer buffer;
             paint.getAnnotation()->writeToBuffer(buffer);
             const size_t size = buffer.bytesWritten();
             if (this->needOpBytes(size)) {