[wasm] Add some more owners, clean up old ones.

BUG=None
TEST=None
R=mtrofin@chromium.org
LOG=N

Review-Url: https://codereview.chromium.org/2824793002
Cr-Commit-Position: refs/heads/master@{#44663}

src/asmjs/OWNERS

@@ -5,7 +5,6 @@ set noparent
 ahaas@chromium.org
 bradnelson@chromium.org
 clemensh@chromium.org
-jpp@chromium.org
 mtrofin@chromium.org
 rossberg@chromium.org
 titzer@chromium.org

src/compiler/OWNERS

@@ -9,6 +9,8 @@ danno@chromium.org
 tebbi@chromium.org
 
 per-file wasm-*=ahaas@chromium.org
+per-file wasm-*=bbudge@chromium.org
+per-file wasm-*=bradnelson@chromium.org
 per-file wasm-*=clemensh@chromium.org
 
 per-file int64-lowering.*=ahaas@chromium.org

src/wasm/OWNERS

@@ -4,6 +4,7 @@ ahaas@chromium.org
 bbudge@chromium.org
 bradnelson@chromium.org
 clemensh@chromium.org
+gdeepti@chromium.org
 mtrofin@chromium.org
 rossberg@chromium.org
 titzer@chromium.org

test/cctest/asmjs/OWNERS

@@ -5,7 +5,6 @@ set noparent
 ahaas@chromium.org
 bradnelson@chromium.org
 clemensh@chromium.org
-jpp@chromium.org
 mtrofin@chromium.org
 rossberg@chromium.org
 titzer@chromium.org