Delete the browser-compositor webview render mode

android_webview/browser/in_process_view_renderer.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "android_webview/browser/in_process_view_renderer.h"
 
 #include <android/bitmap.h>
 
 #include "android_webview/public/browser/draw_gl.h"
 #include "android_webview/public/browser/draw_sw.h"
 #include "base/android/jni_android.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/android/synchronous_compositor.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
+#include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkDevice.h"
 #include "third_party/skia/include/core/SkGraphics.h"
 #include "third_party/skia/include/core/SkPicture.h"
 #include "ui/gfx/size_conversions.h"
 #include "ui/gfx/transform.h"
 #include "ui/gfx/vector2d_f.h"
 #include "ui/gl/gl_bindings.h"
 
 // TODO(leandrogracia): Borrowed from gl2ext.h. Cannot be included due to
 // conflicts with  gl_bindings.h and the EGL library methods
 // (eglGetCurrentContext).
 #ifndef GL_TEXTURE_EXTERNAL_OES
 #define GL_TEXTURE_EXTERNAL_OES 0x8D65
 #endif
 
 #ifndef GL_TEXTURE_BINDING_EXTERNAL_OES
 #define GL_TEXTURE_BINDING_EXTERNAL_OES 0x8D67
 #endif
 
 using base::android::AttachCurrentThread;
 using base::android::JavaRef;
 using base::android::ScopedJavaLocalRef;
-using content::Compositor;
 using content::ContentViewCore;
 
 namespace android_webview {
 
 namespace {
 
 class GLStateRestore {
  public:
   GLStateRestore() {
 #if !defined(NDEBUG)
@@ skipping 201 matching lines @@
 bool RenderPictureToCanvas(SkPicture* picture, SkCanvas* canvas) {
   canvas->drawPicture(*picture);
   return true;
 }
 
 // TODO(boliu): Remove this when hardware mode is ready.
 bool HardwareEnabled() {
  return CommandLine::ForCurrentProcess()->HasSwitch("testing-webview-gl-mode");
 }
 
+// Provides software rendering functions from the Android glue layer.
+// Allows preventing extra copies of data when rendering.
+AwDrawSWFunctionTable* g_sw_draw_functions = NULL;
+
+// Tells if the Skia library versions in Android and Chromium are compatible.
+// If they are then it's possible to pass Skia objects like SkPictures to the
+// Android glue layer via the SW rendering functions.
+// If they are not, then additional copies and rasterizations are required
+// as a fallback mechanism, which will have an important performance impact.
+bool g_is_skia_version_compatible = false;
+
 }  // namespace
 
+// static
+void BrowserViewRenderer::SetAwDrawSWFunctionTable(
+    AwDrawSWFunctionTable* table) {
+  g_sw_draw_functions = table;
+  g_is_skia_version_compatible =
+      g_sw_draw_functions->is_skia_version_compatible(&SkGraphics::GetVersion);
+  LOG_IF(WARNING, !g_is_skia_version_compatible)
+      << "Skia versions are not compatible, rendering performance will suffer.";
+}
+
+// static
+AwDrawSWFunctionTable* BrowserViewRenderer::GetAwDrawSWFunctionTable() {
+  return g_sw_draw_functions;
+}
+
+// static
+bool BrowserViewRenderer::IsSkiaVersionCompatible() {
+  DCHECK(g_sw_draw_functions);
+  return g_is_skia_version_compatible;
+}
+
 InProcessViewRenderer::InProcessViewRenderer(
     BrowserViewRenderer::Client* client,
     JavaHelper* java_helper)
     : client_(client),
       java_helper_(java_helper),
       web_contents_(NULL),
       compositor_(NULL),
       view_visible_(false),
       continuous_invalidate_(false),
       continuous_invalidate_task_pending_(false),
@@ skipping 321 matching lines @@
   // TODO(joth): BrowserViewRendererImpl had a bunch of logic for dpi and page
   // scale here. Determine what if any needs bringing over to this class.
   return CompositeSW(canvas);
 }
 
 bool InProcessViewRenderer::CompositeSW(SkCanvas* canvas) {
   return compositor_ && compositor_->DemandDrawSw(canvas);
 }
 
 }  // namespace android_webview