cc: Consolidate the analysis_canvas operations

cc/switches.cc

 // Copyright (c) 2012 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 "cc/switches.h"
 
 #include "base/command_line.h"
 
 namespace cc {
 namespace switches {
@@ skipping 18 matching lines @@
 const char kEnablePartialSwap[]             = "enable-partial-swap";
 
 const char kEnablePerTilePainting[]         = "enable-per-tile-painting";
 
 // Try to finish display pipeline before vsync tick
 const char kEnableRightAlignedScheduling[] = "enable-right-aligned-scheduling";
 
 const char kEnableTopControlsPositionCalculation[] =
     "enable-top-controls-position-calculation";
 
+// Enable solid tile color, transparent tile, and cheapness prediction metrics.
+const char kEnablePredictionBenchmarking[] = "enable-prediction-benchmarking";
+
 // The height of the movable top controls.
 const char kTopControlsHeight[] = "top-controls-height";
 
 // Percentage of the top controls need to be hidden before they will auto hide.
 const char kTopControlsHideThreshold[] = "top-controls-hide-threshold";
 
 // Percentage of the top controls need to be shown before they will auto show.
 const char kTopControlsShowThreshold[] = "top-controls-show-threshold";
 
 // Number of worker threads used to rasterize content.
@@ skipping 30 matching lines @@
 const char kTraceAllRenderedFrames[]      = "trace-all-rendered-frames";
 
 // Re-rasters everything multiple times to simulate a much slower machine.
 // Give a scale factor to cause raster to take that many times longer to
 // complete, such as --slow-down-raster-scale-factor=25.
 const char kSlowDownRasterScaleFactor[] = "slow-down-raster-scale-factor";
 
 // Schedule rasterization jobs according to their estimated processing cost.
 const char kUseCheapnessEstimator[] = "use-cheapness-estimator";
 
+// Predict whether the tile will be either solid color or transparent.
+const char kUseColorEstimator[] = "use-color-estimator";
+
 // The scale factor for low resolution tile contents.
 const char kLowResolutionContentsScaleFactor[] =
     "low-resolution-contents-scale-factor";
 
 bool IsImplSidePaintingEnabled() {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
   if (command_line.HasSwitch(cc::switches::kDisableImplSidePainting))
     return false;
   else if (command_line.HasSwitch(cc::switches::kEnableImplSidePainting))
     return true;
 
 #if defined(OS_ANDROID)
   return true;
 #else
   return false;
 #endif
 }
 
 }  // namespace switches
 }  // namespace cc