Add several new TRACE call and UMA metrics for GetProfile()

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 907b6ffd43fb76c201728c0388dd5a4dfbb910ee..4aedc197e4bd8f93400253efab040146580b9b43 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -27342,6 +27342,11 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="PrefService.CreateProfilePrefsTime" units="milliseconds">
+  <owner>rkaplow@chromium.org</owner>
+  <summary>The amount of time that elapsed during CreateProfilePrefs.</summary>
+</histogram>
+
 <histogram name="Prerender.AbandonTimeUntilUsed" units="milliseconds">
   <owner>davidben@chromium.org</owner>
   <owner>tburkard@chromium.org</owner>
@@ -28401,6 +28406,19 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <summary>Size of the cookies database.</summary>
 </histogram>
 
+<histogram name="Profile.CreateAndInitializeProfile" units="milliseconds">
+  <owner>rkaplow@chromium.org</owner>
+  <summary>Length of time to setup profile.</summary>
+</histogram>
+
+<histogram name="Profile.CreateProfileHelperTime" units="milliseconds">
+  <owner>rkaplow@chromium.org</owner>
+  <summary>
+    The amount of time that elapsed during ProfileManager::CreateProfileHelper.
+    This is called when a profile is created synchronously (usually at startup).
+  </summary>
+</histogram>
+
 <histogram name="Profile.CreateResult" enum="ProfileCreateResult">
   <owner>pam@chromium.org</owner>
   <owner>rlp@chromium.org</owner>
@@ -28490,6 +28508,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Profile.GetProfile" units="milliseconds">
+  <obsolete>
+    Deprecated 02/2015. Profile.CreateAndInitializeProfile is more useful.
+  </obsolete>
   <owner>rkaplow@chromium.org</owner>
   <summary>Length of time to retrieve profile.</summary>
 </histogram>
@@ -28664,6 +28685,13 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Profile.OnPrefsLoadedTime" units="milliseconds">
+  <owner>rkaplow@chromium.org</owner>
+  <summary>
+    The amount of time that elapsed during ProfileImpl::OnPrefsLoaded.
+  </summary>
+</histogram>
+
 <histogram name="Profile.Opening" enum="ProfileOpen">
   <obsolete>
     Deprecated because it did not present the information clearly.
@@ -33311,6 +33339,13 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <summary>The number of pinned tabs opened when a profile is loaded.</summary>
 </histogram>
 
+<histogram name="Settings.RegisterProfilePrefsTime" units="milliseconds">
+  <owner>rkaplow@chromium.org</owner>
+  <summary>
+    The amount of time that elapsed during RegisterProfilePrefs.
+  </summary>
+</histogram>
+
 <histogram name="Settings.ShowHomeButton" enum="BooleanEnabled">
   <owner>mpearson@chromium.org</owner>
   <summary>