color: Update ICC histograms based on results

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 359d0e781a986b77fad25f189dd8cd57338dd44f..adf576efaaa583cdf58c0bb6b9d1af9367ec3fc9 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -4450,6 +4450,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 
 <histogram name="Blink.ColorSpace.Destination.ExtractedRawData"
     enum="ColorSpaceExtractedRawDataResult">
+  <obsolete>
+    Merged into Blink.ColorSpace.Destination.ICCResult on 2017-02-28.
+  </obsolete>
   <owner>ccameron@chromium.org</owner>
   <summary>
     Whether or not the output color space ICC profile was able to produce raw
@@ -4457,7 +4460,18 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Blink.ColorSpace.Destination.ICCResult"
+    enum="ICCProfileAnalyzeResult">
+  <owner>ccameron@chromium.org</owner>
+  <summary>
+    The result of analyzing the destiation color space's ICC profile.
+  </summary>
+</histogram>
+
 <histogram name="Blink.ColorSpace.Destination.LinearFitError">
+  <obsolete>
+    Linear fit found to be always inaccurate on 2017-02-28.
+  </obsolete>
   <owner>ccameron@chromium.org</owner>
   <summary>
     The L-infinity error (in 8-bit values) of the numerical approximation of
@@ -4468,6 +4482,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 
 <histogram name="Blink.ColorSpace.Destination.Matrix"
     enum="ColorSpaceMatrixResult">
+  <obsolete>
+    Merged into Blink.ColorSpace.Destination.ICCResult on 2017-02-28.
+  </obsolete>
   <owner>ccameron@chromium.org</owner>
   <summary>
     Whether or not to-XYZD50 matrix was extracted from the output color space
@@ -4480,7 +4497,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <owner>ccameron@chromium.org</owner>
   <summary>
     Whether or not the nonlinear least squares fit of the table-based ICC
-    profile transfer function converged.
+    profile transfer function for a single channel converged.
   </summary>
 </histogram>
 
@@ -4488,13 +4505,25 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <owner>ccameron@chromium.org</owner>
   <summary>
     The L-infinity error (in 8-bit values) of the numerical approximation of
-    table-based ICC profile transfer functions, when the nonlinear approximation
-    converged.
+    table-based ICC profile transfer functions for a single channel, when the
+    nonlinear approximation converged.
+  </summary>
+</histogram>
+
+<histogram name="Blink.ColorSpace.Destination.NonlinearFitErrorCombined">
+  <owner>ccameron@chromium.org</owner>
+  <summary>
+    The L-infinity error (in 8-bit values) of the numerical approximation of
+    table-based ICC profile transfer functions for all channels combined, when
+    the nonlinear approximation converged.
   </summary>
 </histogram>
 
 <histogram name="Blink.ColorSpace.Destination.Numerical"
     enum="ColorSpaceNumericalResult">
+  <obsolete>
+    Merged into Blink.ColorSpace.Destination.ICCResult on 2017-02-28.
+  </obsolete>
   <owner>ccameron@chromium.org</owner>
   <summary>
     Whether or not the output color space ICC profile has a numerical transfer
@@ -4503,6 +4532,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Blink.ColorSpace.Destination.OneMinusTMax">
+  <obsolete>
+    TMax found to almost always be 1 on 2017-02-28.
+  </obsolete>
   <owner>ccameron@chromium.org</owner>
   <summary>
     One minus the maximum value of table-based ICC profile transfer functions as
@@ -4512,6 +4544,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Blink.ColorSpace.Destination.TMin">
+  <obsolete>
+    TMin found to almost always be 0 on 2017-02-28.
+  </obsolete>
   <owner>ccameron@chromium.org</owner>
   <summary>
     The minimum value of table-based ICC profile transfer functions as an 8-bit
@@ -94849,6 +94884,18 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </int>
 </enum>
 
+<enum name="ICCProfileAnalyzeResult" type="int">
+  <int value="0"
+      label="Extracted primary matrix and numerical transfer function"/>
+  <int value="1"
+      label="Extracted primary matrix and approximated transfer function"/>
+  <int value="2"
+      label="Failed to converge in approximation of transfer function"/>
+  <int value="3" label="Failed to extract transfer function"/>
+  <int value="4" label="Failed to extract primary matrix"/>
+  <int value="5" label="Failed to parse"/>
+</enum>
+
 <enum name="IceCandidatePairTypes" type="int">
   <int value="0" label="host_host"/>
   <int value="1" label="host_srflx"/>