Add flags for 2 experimental palm detection filter.

- Palm Detection when the touchscreen reports the max radius
- Palm Detection when the touchscreeen reports a palm itself

Both are experimental features and documented as such, and or on by
default already, etc.

Bug: 1060051
Change-Id: I130c466a03b9a295c1b2777589ffc8a3ea8a5be5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2094908
Commit-Queue: Rob Schonberger <robsc@chromium.org>
Reviewed-by: Sean O'Brien <seobrien@chromium.org>
Cr-Commit-Position: refs/heads/master@{#749044}

chrome/browser/about_flags.cc

@@ -4164,6 +4164,16 @@ const FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kEnableNeuralStylusPalmRejectionDescription, kOsCrOS,
      FEATURE_VALUE_TYPE(ui::kEnableNeuralPalmDetectionFilter)},
 
+    {"enable-palm-max-touch-major",
+     flag_descriptions::kEnablePalmOnMaxTouchMajorName,
+     flag_descriptions::kEnablePalmOnMaxTouchMajorDescription, kOsCrOS,
+     FEATURE_VALUE_TYPE(ui::kEnablePalmOnMaxTouchMajor)},
+
+    {"enable-palm-tool-type-palm",
+     flag_descriptions::kEnablePalmOnToolTypePalmName,
+     flag_descriptions::kEnablePalmOnToolTypePalmName, kOsCrOS,
+     FEATURE_VALUE_TYPE(ui::kEnablePalmOnToolTypePalm)},
+
     {"enable-heuristic-stylus-palm-rejection",
      flag_descriptions::kEnableHeuristicStylusPalmRejectionName,
      flag_descriptions::kEnableHeuristicStylusPalmRejectionDescription, kOsCrOS,

chrome/browser/flag-metadata.json

@@ -1665,6 +1665,20 @@
     "owners": [ "schenney", "paint-dev" ],
     "expiry_milestone": 86
   },
+  {
+    "name": "enable-palm-max-touch-major",
+    "owners": ["robsc", "napper", "adlr"],
+    // Added feature to possibly disable/enable this functionality, combined
+    //  with neural net palm detection.
+    "expiry_milestone": 90
+  },
+  {
+    "name": "enable-palm-tool-type-palm",
+    "owners": ["robsc", "napper", "adlr"],
+    // Added feature to possibly disable/enable this functionality, combined
+    //  with neural net palm detection.
+    "expiry_milestone": 90
+  },
   {
     "name": "enable-parallel-downloading",
     "owners": [ "qinmin", "xingliu", "dtrainor" ],

chrome/browser/flag_descriptions.cc

@@ -3279,6 +3279,18 @@ const char kEnableNeuralStylusPalmRejectionDescription[] =
     "Experimental: Enable Neural Palm detection. Not compatible with all "
     "devices.";
 
+const char kEnablePalmOnMaxTouchMajorName[] =
+    "Enable Palm when Touch is Maximum";
+const char kEnablePalmOnMaxTouchMajorDescription[] =
+    "Experimental: Enable Palm detection when the touchscreen reports max "
+    "size. Not compatible with all devices.";
+
+const char kEnablePalmOnToolTypePalmName[] =
+    "Enable Palm when Tool Type is Palm";
+const char kEnablePalmOnToolTypePalmDescription[] =
+    "Experimental: Enable palm detection when touchscreen reports "
+    "TOOL_TYPE_PALM. Not compatible with all devices.";
+
 const char kEnableParentalControlsSettingsName[] =
     "Enable Parental controls settings";
 const char kEnableParentalControlsSettingsDescription[] =

chrome/browser/flag_descriptions.h

@@ -1889,6 +1889,12 @@ extern const char kEnableHeuristicStylusPalmRejectionDescription[];
 extern const char kEnableNeuralStylusPalmRejectionName[];
 extern const char kEnableNeuralStylusPalmRejectionDescription[];
 
+extern const char kEnablePalmOnMaxTouchMajorName[];
+extern const char kEnablePalmOnMaxTouchMajorDescription[];
+
+extern const char kEnablePalmOnToolTypePalmName[];
+extern const char kEnablePalmOnToolTypePalmDescription[];
+
 extern const char kEnableParentalControlsSettingsName[];
 extern const char kEnableParentalControlsSettingsDescription[];
 

tools/metrics/histograms/enums.xml

@@ -37889,6 +37889,7 @@ from previous Chrome versions.
   <int value="-1327676774" label="disable-accelerated-mjpeg-decode"/>
   <int value="-1326463296" label="SSLCommittedInterstitials:disabled"/>
   <int value="-1325887476" label="NewPrintPreview:enabled"/>
+  <int value="-1324634193" label="EnablePalmOnMaxTouchMajor:disabled"/>
   <int value="-1324029365" label="EnableTLS13EarlyData:enabled"/>
   <int value="-1322882747" label="disable-datasaver-prompt"/>
   <int value="-1319688939" label="ignore-gpu-blacklist"/>
@@ -39400,6 +39401,7 @@ from previous Chrome versions.
   <int value="480677983" label="WebXRARDOMOverlay:disabled"/>
   <int value="481506759" label="ServiceWorkerScriptStreaming:enabled"/>
   <int value="482232604" label="PercentBasedScrolling:enabled"/>
+  <int value="487810392" label="EnablePalmOnToolTypePalm:enabled"/>
   <int value="492113129" label="ExperimentalAppBanners:enabled"/>
   <int value="492985975" label="use-monitor-color-space"/>
   <int value="493903641" label="disable-appcontainer"/>
@@ -39578,6 +39580,7 @@ from previous Chrome versions.
   <int value="701766325" label="PerNavigationMojoInterface:enabled"/>
   <int value="703469777" label="AndroidNightModeTabReparenting:enabled"/>
   <int value="705407202" label="AutofillSaveCardImprovedUserConsent:disabled"/>
+  <int value="705712478" label="EnablePalmOnToolTypePalm:disabled"/>
   <int value="705713283" label="EasyUnlockPromotions:disabled"/>
   <int value="709850261" label="disable-touch-editing"/>
   <int value="710700286" label="ImmersiveFullscreen:disabled"/>
@@ -40275,6 +40278,7 @@ from previous Chrome versions.
   <int value="1548776701" label="AllBookmarks:disabled"/>
   <int value="1548942246" label="PassiveDocumentEventListeners:disabled"/>
   <int value="1552753678" label="DnsHttpssvc:disabled"/>
+  <int value="1553422694" label="EnablePalmOnMaxTouchMajor:enabled"/>
   <int value="1559034872" label="AutofillPrefilledFields:enabled"/>
   <int value="1560188739" label="reader-mode-heuristics"/>
   <int value="1561781431" label="VirtualKeyboardBorderedKey:enabled"/>