Allow one-copy task tile worker pool to use compressed textures.

cc/resources/resource_format.cc

Index: cc/resources/resource_format.cc
diff --git a/cc/resources/resource_format.cc b/cc/resources/resource_format.cc
index c62ae934d728f5d749514164f5da80fc9094c4bd..b2eaee66b51a485830770711cb838a3c469e2e1f 100644
--- a/cc/resources/resource_format.cc
+++ b/cc/resources/resource_format.cc
@@ -28,6 +28,28 @@ SkColorType ResourceFormatToSkColorType(ResourceFormat format) {
   return kN32_SkColorType;
 }
 
+ResourceFormat SkColorTypeToResourceFormat(SkColorType color_type) {
+  switch (color_type) {
+    case kARGB_4444_SkColorType:
+      return RGBA_4444;
+    case kAlpha_8_SkColorType:
+      return ALPHA_8;
+    case kRGB_565_SkColorType:
+      return RGB_565;
+    case kRGBA_8888_SkColorType:
+      return RGBA_8888;
+    case kBGRA_8888_SkColorType:
+      return BGRA_8888;
+    case kGray_8_SkColorType:
+    case kIndex_8_SkColorType:
+    case kUnknown_SkColorType:
+      NOTREACHED();
+      break;
+  }
+  NOTREACHED();
+  return RGBA_8888;
+}
+
 int BitsPerPixel(ResourceFormat format) {
   switch (format) {
     case BGRA_8888:
@@ -95,10 +117,11 @@ gfx::BufferFormat BufferFormat(ResourceFormat format) {
       return gfx::BufferFormat::BGRA_8888;
     case RGBA_4444:
       return gfx::BufferFormat::RGBA_4444;
+    case ETC1:
+      return gfx::BufferFormat::ETC1;
     case ALPHA_8:
     case LUMINANCE_8:
     case RGB_565:
-    case ETC1:
     case RED_8:
       break;
   }
@@ -106,4 +129,33 @@ gfx::BufferFormat BufferFormat(ResourceFormat format) {
   return gfx::BufferFormat::RGBA_8888;
 }
 
+ResourceFormat BufferFormatToResourceFormat(gfx::BufferFormat format) {
+  switch (format) {
+    case gfx::BufferFormat::RGBA_8888:
+      return RGBA_8888;
+    case gfx::BufferFormat::BGRA_8888:
+      return BGRA_8888;
+    case gfx::BufferFormat::RGBA_4444:
+      return RGBA_4444;
+    case gfx::BufferFormat::ETC1:
+      return ETC1;
+    case gfx::BufferFormat::ATC:
+    case gfx::BufferFormat::ATCIA:
+    case gfx::BufferFormat::DXT1:
+    case gfx::BufferFormat::DXT5:
+    case gfx::BufferFormat::R_8:
+    case gfx::BufferFormat::BGRX_8888:
+    case gfx::BufferFormat::YUV_420:
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
+    case gfx::BufferFormat::UYVY_422:
+      break;
+  }
+  NOTREACHED();
+  return RGBA_8888;
+}
+
+bool IsResourceFormatCompressed(ResourceFormat format) {
+  return format == ETC1;
+}
+
 }  // namespace cc